Class: AwsStudentAccounts::App

Inherits:
Thor
  • Object
show all
Includes:
Thor::Actions
Defined in:
lib/aws_student_accounts/app.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#fog_credentials ⇒ Object (readonly)

Returns the value of attribute fog_credentials.



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# File 'lib/aws_student_accounts/app.rb', line 10

def fog_credentials
  @fog_credentials
end

Class Method Details

.common_options ⇒ Object 



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# File 'lib/aws_student_accounts/app.rb', line 12

def self.common_options
  method_option :fog_file, desc: "Path to YAML file of fog credentials",
                  type: :string, aliases: "-C", required: true
  method_option :only, desc: "Restrict to comma-separated list of fog keys",
                  type: :string, aliases: "-o"
end

Instance Method Details

#clean_accounts ⇒ Object 



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# File 'lib/aws_student_accounts/app.rb', line 113

def clean_accounts
  load_and_verify_options
  @io_semaphore = Mutex.new

  # Double check before unleashing devastation
  unless yes?("Do you really want to terminate all instances, disk, IPs, networks etc?", :red)
    say "Phew!", :green
    exit 1
  end
  Parallel.each(fog_credentials, in_threads: fog_credentials.size) do |, credentials|
    all_regions = aws_regions(false)
    Parallel.each(all_regions, in_threads: all_regions.size) do |aws_region|
      compute = Fog::Compute::AWS.new(credentials.merge(region: aws_region))
      destroy_everything(, aws_region, compute)
    end
  end
end

#create_students(path_to_student_folders = "students") ⇒ Object 



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# File 'lib/aws_student_accounts/app.rb', line 44

def create_students(path_to_student_folders="students")
  load_and_verify_options
  @io_semaphore = Mutex.new

  @users_credentials = ThreadSafe::Hash.new
  @users_passwords = ThreadSafe::Hash.new

  FileUtils.mkdir_p(path_to_student_folders)
  FileUtils.chdir(path_to_student_folders) do
    Parallel.each(fog_credentials, in_threads: fog_credentials.size) do |username, credentials|
      create_student_user(username, credentials)
    end

    # don't rewrite the shared file if only re-creating credentials for one person
    # FIXME: update these files rather than rewriting?
    # TODO: make backups of shared files before rewriting
    unless options[:only]
      File.open("students-fog-api.yml", "w") do |f|
        f << @users_credentials.to_yaml
      end
      say "Stored all user API credentials: #{File.expand_path('students-fog-api.yml')}"

      File.open("students-console-passwords.md", "w") do |f|
        f << "# Student AWS logins\n\n"
        fog_credentials.each do |username, credentials|
          if  = @users_passwords[username]
            f << <<-EOS
## #{[:username]}

* Sign-in URL: #{[:url]}
* Username: #{[:username]}
* Password: #{[:password]}

            EOS
          end
        end
        say "Stored all user passwords: #{File.expand_path('students-console-passwords.md')}"
      end
    end
  end
end

#delete_students ⇒ Object 



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# File 'lib/aws_student_accounts/app.rb', line 88

def delete_students
  load_and_verify_options
  @io_semaphore = Mutex.new

  Parallel.each(fog_credentials, in_threads: fog_credentials.size) do |username, credentials|
    begin
      iam = Fog::AWS::IAM.new(credentials)
      delete_user(iam, username)
      @io_semaphore.synchronize do
        user_say username, "Deleted user", :green
      end
    rescue Fog::AWS::IAM::NotFound
      @io_semaphore.synchronize do
        user_say username, "Does not exist", :red
      end
    rescue => e
      @io_semaphore.synchronize do
        user_say username, e.message, :red
      end
    end
  end
end

#verify_credentials ⇒ Object 



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# File 'lib/aws_student_accounts/app.rb', line 21

def verify_credentials
  load_and_verify_options
  @io_semaphore = Mutex.new
  Parallel.each(fog_credentials, in_threads: 10) do |username, credentials|
    begin
       = (credentials)
      server_count = [:servers]
      @io_semaphore.synchronize do
        say "#{username}: "
        say "OK ", :green
        say "(#{server_count} vm)"
      end
    rescue => e
      @io_semaphore.synchronize do
        say "#{username}: "
        say e.message, :red
      end
    end
  end
end